What are the basic supplies needed for a complete car PC?

Halllllllo everyone, first post. I've been looking at carputers for about a week now and I decided after a few days that I too want a carputer like many of you drivers out there. I have no experience in making my own PC or audio installations. I don't know what to do to install a car PC into my car, but I do know that a main PC system and a monitor (preferably in-dash/lcd) is needed, but thats about all I know. I have an 04 Accord Coupe and about $425 to spend...

Any suggestions would be very much appreciated. Thanks for the time to read this.

if you are new to audio installations and PC's you have a lot of research ahead of you before attempting something like this, i browsed the forums for a couple of months before i went ahead, and that is with a decent knowledge of computers and car stereo installations. $425 isnt enough add up all the prices for youself, power supply, motherboard, RAM, (CPU if you dont buy a via epia mini) HDD, cdrom/dvd, LCD, GPS dongle, then you have to work out which approach you are taking to play the music through your speakers.

Maybe you could look into some palm solutions or so.
But if you are planning on taking this seriously, you will probably need a bigger budget. Unless you already have a lot of computerparts laying around.

So if you are going to take it seriously, plan the whole build and do a lot of reading first. Otherwise you might regret having made some purchases. And eventually the project will cost you even more.

for a basic install you need:

Power source:
- special DC-DC power solutions for in the car (most power efficient)
like an OPUS, Carnetix or PW + ITPS combo

- or power inverter + regular PSU

PC
You will need a complete PC.
Best would be if it is low-power (easier on your battery)
This is one of the main reasons why a lot of people on this forum use VIA EPIA mobo.

Screen

Input
Keyboards and mouse are no good in a car, so you'll need something else, one of these things:
- touchpad
- touchscreen
- keypad
- remote
- ...

Software

Wiring

Audio setup
- you can hook up your PC straight to an AMP

- or you can hook it up to your HU
- directly via an AUX on your HU
- if you have no AUX, you can use a FM modulator

So if you add it all up, you'll be over that $425 very quickly.

Why is it drug addicts and computer afficionados are both called users?